Well I'm sure they adapt somehow and learn to do the cleaning or how to assemble electronics, but I like to whisper "come by" and "take time" to them, as in the lovely video you mention below. Thank you for that link -- it put a tear in my expatriate eye.

Very interesting about the mutilations as markings. I wonder if the restaurant would sell you their copy. I bet they bought it for pennies from some used book seller and wouldn't miss it a bit. They might even give it to you if you took them another old book to trade.